JP2003146353A - Pilfer-proof cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indication by printing or the like without causing a hygienic problem for food on a pilfer-proof cap of a two-piece type comprising a shell and a packing. SOLUTION: The pilfer-proof cap C comprises a synthetic resin shell 1 including a top plate 5, a skirt wall 6 and a tamper-evident band 8 coupled via a plurality of bridges 7 with a lower end of the skirt wall 6, and a synthetic resin hermetic packing 4 to be inserted into the shell 1 to be mounted in contact with an upper end surface of a container mouth 3. The packing 4 is made of a transparent synthetic resin, and an indication M such as a mark by printing or the like is applied on an upper surface of the top plate 15 of the hermetic packing 4.

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a synthetic resin pill fur proof cap mounted on the mouth of various containers, and more specifically, to a synthetic resin shell. And a pill fur proof cap comprising a sealing resin made of synthetic resin inserted into the shell to seal the opening of the container. 2. Description of the Related Art The shell of the above cap is composed of a top plate, a skirt wall, and a tamper evidence band (hereinafter referred to as a TE band) connected to a lower end of the skirt wall via a plurality of bridges. Is formed by injection molding or the like, for example, using a polypropylene-based resin material. On the other hand, as packing for sealing the mouth of a container,
There is a packing top plate that is placed in contact with the upper end surface of the container mouth, and a middle foot that is suspended and connected to the packing top plate and that is sealingly fitted into the opening of the container mouth when closed.
Further, there is a type in which a top side seal portion is connected to the outer peripheral end portion of the packing top plate, which is generally excellent in content resistance and mechanical strength.
It is formed of an olefin resin material such as E) or polypropylene (PP). The sealing gasket at the mouth of the container is pushed into the shell and held so as to be rotatable relative to the shell. Before the bridge is cut off when the shell is opened or before the shell is opened. After or at the same time as the cutting, the guide part on the shell side comes into contact with the outer peripheral end of the packing, and the lifting of the packing is started until the middle foot of the packing loses the airtight function of the container mouth. This ensures that the container remains airtight even when the shell bridge is cut. [0005] In addition to the pill fur proof cap, there is a pill fur proof cap provided with a sealing packing having no middle foot. Further, as shown in FIG. Of the molten resin material A on the inner surface of the top plate 5
There is also a pill fur proof cap in which the packing 4 is integrated with the shell top plate 5 in the form of an in-shell mold for dropping and pressing this. [0006] By the way, for the purpose of sales promotion of goods,
The inventor prints a mark such as "hit" or "outside" on the inner surface of the top plate of the cap, and when the cap is opened, the product is free if the "hit" mark is present. I came up with the service. At this time, instead of printing the "hit" and "missing" marks, for example, a few kinds of "point" marks are printed, and the goods are printed according to the points or the total points. Or printing a mark such as "1st grade" or "2nd grade", and providing a product corresponding to the mark. [0008] Here, the present inventor has proposed:
As shown in FIG. 6, a line 21 for intermittently feeding the pill fur proof cap C at the pitch of its diameter, and a printing means 22 by, for example, a jet printer are provided in the middle of the line 21 so as to be able to move up and down. The cap C is turned upside down and is flown into the line 21. During the intermittent feed stop, the printing section 23 of the printing means 22 is lowered into the cap C, and various marks are sealed.
We have a plan to print on the inside. However, printing a mark on the inner surface of the sealing gasket 4 has a problem in food hygiene because the contents filled in the container come into direct contact with the printing ink, and the plan is abandoned. I had to do it. As another problem, it has been found that in the above-mentioned plan, the mark printing time per cap C is long. That is, in the pill fur proof cap C, since the bottom is deepened with the cylindrical skirt wall and the TE band, when printing the mark, the line 21 is intermittently stopped to print. It is necessary to lower the portion 23 into the cap C with a large stroke, wait for the printing of the mark to be completed, raise the printing portion 23, and thereafter intermittently move the line 21 by one pitch. As described above, apart from the time required for printing the mark, it is necessary to stop the line during the elevating and lowering of the printing unit 23. Therefore, the mark printing time per cap C is substantially longer. It turned out that this was the case. According to the present invention, apart from the in-shell mold type pill fur proof cap, the pill fur proof cap described at the beginning focuses on the point that the sealing gasket is inserted into the shell. So,
For the two-piece pill fur proof cap with this shell and packing, we developed a technology that allows this cap to be provided with indications such as marks by printing etc. without causing food hygiene problems. is there. That is, the present invention provides a synthetic resin shell having a top plate, a skirt wall, and a tamper evidence band, and an upper end face of a container opening inserted into the shell. A pill fur proof cap comprising a synthetic resin sealing gasket placed on the pill fur proof cap, wherein the sealing gasket is made of a transparent synthetic resin, and a mark is provided on an upper surface of a top plate of the sealing gasket. There is a feature. As a form of display, a display such as printing, other operations such as attaching a label or a sticker, engraving, and processing with a laser beam is arbitrarily selected. In the pill fur proof cap according to the above-mentioned characteristic configuration, since the indication by printing or the like is given to the upper surface of the packing top plate, when the packing is inserted into the shell, the contents filled in the container are directly transferred. In general, they do not come into contact with printing inks, labels, etc., and therefore do not have any food hygiene problems. [0017] Even if the sealing gasket has a middle foot or does not have a middle foot, there is no tubular member or the like on the top surface of the packing top plate. Therefore, when the display is applied to the upper surface of the packing top plate, if the packing is intermittently flowed into the line with the upper surface of the packing top plate facing upward, the display providing unit of the display providing unit (printing unit) , Etc.) can be provided on the upper surface of the packing top plate without raising and lowering the printed portion of the packing. Therefore, it is only necessary to stop the line intermittently during the display application, so that the display application time per one packing is shortened by the time required to move the display application section up and down. can do. As described above, the pill fur proof cap can be provided with an indication such as printing without causing a problem in food hygiene because the pill fur proof cap is a two-piece type formed by a shell and a packing. It can be realized only by identifying the position of the indication of the mark etc. on the top surface of the sealing packing, taking into account the structural characteristics of the above, and not possible with the in-shell mold type pill fur proof cap This is a unique invention. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a pill fur proof cap C made of a synthetic resin. The pill fur proof cap C has a shell 1 made of a synthetic resin.
And a packing 4 inserted into the shell 1 to seal the mouth 3 of the container 2. The shell 1 includes a top plate 5 having a circular shape in a plan view and a skirt wall 6 suspended from the periphery of the top plate 5.
A tamper evidence band (hereinafter referred to as a TE band) 8 connected to the lower end of the skirt wall 6 via a plurality of bridges 7, and a locking member 9 connected to the lower end side of the inner surface of the TE band 8. And a packing guide 10 for lifting the sealing packing 4 when the cap is opened, and
On the inner surface of the skirt wall 6, a cap screw portion 12 screwed to a container screw portion 11 formed on the outer peripheral surface of the container mouth portion 3.
Is formed. In this embodiment, the cap screw 12
The uppermost portion (upper end portion of the thread of the female screw) is used as the packing guide portion 10, but the top plate 5 and the cap screw portion 12
A dedicated packing guide may be formed between the two. The bridge 7 is formed, for example, as follows. That is, the shell 1 is made of, for example, a polypropylene resin by an injection molding method or the like.
When forming the plurality of connecting pieces a, a plurality of connecting pieces a are formed at predetermined intervals in the circumferential direction on the inner surface side between the skirt wall 6 and the TE band 8, and an outer surface of a portion corresponding to the connecting piece a is formed. In this portion, a slit 13 is formed by a cutter over the entire circumference except for a part of the connecting piece a, and the bridge 7 is formed by the connecting piece a leaving this part. When the stopper member 9 is connected to the TE band 8, the upper end thereof is engaged with an annular projection 14 formed below the screw portion 12 of the container opening 3 when the container is opened.
The upper end side is formed so as to be elastically deformable in the radially expanding direction, and when closed, elastically deforms in the radially expanding direction to get over the annular projection 14 and thereafter elastically return to a position in which it can be locked below the annular projection 14. Is configured. As shown in FIG. 2, the packing 4 for sealing of the container mouth 3 is provided with a packing top plate 15 having an outer peripheral edge mounted on the upper end surface of the container mouth 3 and a peripheral edge of the top plate 15. It consists of a middle foot 16 which is suspended and connected to the opening of the container opening 3 so as to be sealable when the container is closed, and is formed of an olefin resin material such as PE or PP. An airtight function portion b having a curved shape is bulged on the outer peripheral surface of the upper and lower middle portions of the middle foot 16, and a downwardly bent portion is formed on the outer peripheral end of the packing top plate 15. A top side seal portion 17 is formed so that the top side seal portion 17 is in close contact with the outer peripheral surface of the container mouth portion 3.
An annular concave portion c is formed along the outer peripheral edge of the packing top plate 15 on the outer peripheral portion of the base portion of the packing. The shape of the top side seal portion 17 is not particularly limited. In this embodiment, as shown in FIG. A suitable angle (eg, 3
3 °) is formed on an inclined surface inclined at θ, and the lower end surface thereof is formed on a horizontal plane perpendicular to the central axis of the lid body 1, and the inner surface S of the inner angle is formed on the container opening 3. It is formed in a circular arc surface so as to match the curved surface of the outer peripheral corner. Therefore, according to this configuration, when a so-called doming phenomenon of the shell top plate 5 (see the phantom diagram in FIG. 1) occurs with an increase in the container internal pressure, the lid main body 1 associated with the doming is formed. Of the skirt wall 6, the upper end of the skirt wall 6 presses the top side seal portion 17 against the outer peripheral corner of the container opening 3 with a pressing force of F, thereby keeping the container 2 highly airtight. be able to. At this time, an annular recess c is formed in the packing top plate 15.
Is formed, the top side seal portion 17 is easily elastically deformed toward the center of the container mouth portion 3, and as a result, the airtight function of the top side seal portion 17 with respect to the outer peripheral corner of the container mouth portion 3 is enhanced. Further, since the above-mentioned pressing force F is hardly applied to the middle foot 16 due to the presence of the annular concave portion c, the airtight function of the middle foot 16 with respect to the inner surface of the container mouth 3 can be maintained at a high level. Even if the proof cap C is used for a hot pack, for example, the airtightness of the container 2 can be further improved. According to the pill fur proof cap C having the above structure, the locking member 9 connected to the TE band 8 can be elastically deformed in the radially expanding direction.
The bridge 7 is reliably prevented from being cut because the bridge 7 can be easily passed over the annular projection 14, and the locking member 9 is in a position where it can be locked below the annular projection 14 when the plugging is completed. It returns elastically. Here, the packing 4 tightly fitted to the container opening 3 is opened by opening the top side seal portion 17 of the packing top plate 15 by the packing guide portion 10, and with this, the middle foot. The position of the locking member 9 and / or the packing guide 10 is specified so that 16 comes out of the container mouth 3 and the lifting of the packing 4 is started after the bridge 7 has been cut. That is, when the cap C is rotated in the opening direction at the time of opening, first, the locking member 9 comes into contact with the annular projection 14 of the container opening 3 to cut the bridge 7. Top side seal part 17 of packing top plate 15
Eventually, the packing 4 is lifted by the packing guide 10, and as the packing 4 is further lifted, the airtight function b of the packing middle foot 16 eventually loses the airtight function of the container opening 3. Here, for the first time, the airtightness of the container 2 by the packing 4 is released. More specifically, even if the gasket 4 is lifted after the bridge 7 is cut, the airtight function part b of the middle foot 16 loses the airtight function of the container mouth part 3 by the distance.
As long as the packing 4 does not lift, the container 2 does not leak tightly. By adjusting the distance until the sealing function is lost, the time from cutting the bridge 7 to releasing the seal can be controlled. it can. According to the above configuration, as long as the bridge 7 is not cut, the airtightness of the container 2 is reliably maintained. Therefore, for example, a slight opening of the cap due to mischief or carelessness without cutting of the bridge 7 (so-called slightly Gas leakage due to turning, suction of outside air, or leakage of contents can be reliably prevented. Here, in the pill fur proof cap C according to the present invention, as described at the beginning, various indications for promoting the sale of the product can be confirmed when the cap C is opened. Thus, the display is provided on the inner surface of the pill fur proof cap C. As a form of display, a display such as printing and other operations, such as sticking a label or a sticker, engraving, and processing with a laser beam, is arbitrarily selected. You have selected. More specifically, as shown in FIG. 3, the sealing gasket 4 is made of a transparent synthetic resin, and the upper surface of the top plate 15 of the sealing gasket 4 has, for example, an inverted character of “round”. A mark (display) M is printed, and when the cap C is removed from the container opening 3, the mark M of "hit" can be confirmed through the transparent sealing packing 4. As described above, the top plate 15 of the sealing packing 4
When the mark M is printed on the upper surface of the container 2, the packing 4 is inserted into the inside of the shell 1, and when the pill fur proof cap C is attached to the opening 3 of the container 2, the contents filled in the container 2 Does not come into direct contact with the printing ink, so there is no food hygiene problem involved. When printing the mark M, for example, FIG.
As shown in the figure, a printing unit 23 of a printing unit 22 is provided in the middle of a line 21 for intermittently feeding the packing 4 at a pitch of its diameter.
The mark M is printed on the top surface of the packing top plate 15 in a short time by intermittently transferring the packing 4 with the top surface of the top plate 15 thereof facing upward. it can. That is, for example, if the mark M is printed on the inner surface of the top plate of the shell 1, as shown in FIG. 6 and explained, the depth of the shell 1 is defined by the cylindrical skirt wall 6 and the TE band 8. Although it is necessary to raise and lower the printing unit 23 by a stroke, if a mark M is printed on the upper surface of the packing top plate 15 as in the present invention, a cylindrical member or the like is provided on the upper surface of the packing top plate 15 Therefore, there is no need to raise and lower the printing unit 23 of the printing unit 22.
Since the line 21 needs to be intermittently stopped only during the mark printing, the printing time of the mark M for one packing 4 can be shortened by the time required to move the printing unit 23 up and down. It is. In the above embodiment, the packing guide 10 is brought into contact with the top side seal 17 of the packing 4 after the bridge 7 is cut.
The packing 4 is not provided with the top side seal portion 17,
The packing guide 10 may be configured to contact the top plate 15 of the packing 4. In addition, regardless of whether or not the top side seal portion 17 is provided, the packing guide 10 is brought into contact with the top side seal portion 17 or the top plate 15 before the bridge 7 is cut. The packing guide 10 may be configured to be in contact with the top side seal 17 or the top plate 15 at the same time as the bridge 7 is cut. Further, for a sealing packing not having the middle foot 16, a form in which a mark M or the like is provided on the upper surface of the packing top plate 15 can be adopted. As described above, the present invention relates to a two-piece type including a shell and a packing for displaying a mark or the like inside a pill fur proof cap for the purpose of, for example, promoting sales of goods. Utilizing the structural characteristics of the pill fur proof cap of the present invention, the pill fur proof cap has a feature in that a mark is provided on the upper surface of the top plate of the sealing packing among the pill fur proof caps. According to this, it is possible to provide the pill fur proof cap with the provision of the display of the mark or the like by printing in a short time in a short time without causing a problem in food hygiene.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a pill fur proof cap in which a main part is taken out and enlarged. FIG. 2 is an exploded cross-sectional view of a pill fur proof cap in which a part of a packing is taken out and enlarged. FIG. 3 is an exploded perspective view of a pill fur proof cap showing two sides of a packing. FIG. 4 is a line configuration diagram showing a printing form of a mark on a packing top plate. FIG. 5 is a sectional view showing an in-shell mold type pill fur proof cap. FIG. 6 is a configuration diagram of a mark printing line planned and drafted by the inventor. [Description of Signs] 1 ... shell, 3 ... container mouth, 4 ... sealing packing, 5 ...
Top plate, 6 skirt wall, 7 bridge, 8 TE band, 15 packing top plate, M mark.

Claims (1)

Claims: 1. A synthetic resin shell including a top plate, a skirt wall, and a tamper evidence band connected to a lower end of the skirt wall via a plurality of bridges, and a shell inserted into the shell. And a pill fur proof cap comprising a synthetic resin sealing gasket placed on the upper end surface of the container opening, wherein the sealing gasket is made of a transparent synthetic resin, and a top plate of the sealing gasket. A pill fur proof cap characterized by being provided with an indication on an upper surface.